ekristen/aws-nuke

package resources

import (
    "context"

    "fmt"

    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/service/ec2"

    "github.com/ekristen/libnuke/pkg/registry"
    "github.com/ekristen/libnuke/pkg/resource"
    "github.com/ekristen/libnuke/pkg/types"

    "github.com/ekristen/aws-nuke/v3/pkg/nuke"
)

const EC2VPNGatewayAttachmentResource = "EC2VPNGatewayAttachment"

func init() {
    registry.Register(&registry.Registration{
        Name:     EC2VPNGatewayAttachmentResource,
        Scope:    nuke.Account,
        Resource: &EC2VPNGatewayAttachment{},
        Lister:   &EC2VPNGatewayAttachmentLister{},
        DeprecatedAliases: []string{
            "EC2VpnGatewayAttachement",
        },
    })
}

type EC2VPNGatewayAttachmentLister struct{}

func (l *EC2VPNGatewayAttachmentLister) List(_ context.Context, o interface{}) ([]resource.Resource, error) {
    opts := o.(*nuke.ListerOpts)
    svc := ec2.New(opts.Session)

    resp, err := svc.DescribeVpcs(nil)
    if err != nil {
        return nil, err
    }

    resources := make([]resource.Resource, 0)
    for _, vpc := range resp.Vpcs {
        params := &ec2.DescribeVpnGatewaysInput{
            Filters: []*ec2.Filter{
                {
                    Name:   aws.String("attachment.vpc-id"),
                    Values: []*string{vpc.VpcId},
                },
            },
        }

        resp, err := svc.DescribeVpnGateways(params)
        if err != nil {
            return nil, err
        }

        for _, vgw := range resp.VpnGateways {
            resources = append(resources, &EC2VPNGatewayAttachment{
                svc:     svc,
                vpcID:   *vpc.VpcId,
                vpnID:   *vgw.VpnGatewayId,
                vpcTags: vpc.Tags,
                vgwTags: vgw.Tags,
            })
        }
    }

    return resources, nil
}

type EC2VPNGatewayAttachment struct {
    svc     *ec2.EC2
    vpcID   string
    vpnID   string
    state   string
    vpcTags []*ec2.Tag
    vgwTags []*ec2.Tag
}

func (v *EC2VPNGatewayAttachment) Filter() error {
    if v.state == "detached" {
        return fmt.Errorf("already detached")
    }
    return nil
}

func (v *EC2VPNGatewayAttachment) Remove(_ context.Context) error {
    params := &ec2.DetachVpnGatewayInput{
        VpcId:        &v.vpcID,
        VpnGatewayId: &v.vpnID,
    }

    _, err := v.svc.DetachVpnGateway(params)
    if err != nil {
        return err
    }

    return nil
}

func (v *EC2VPNGatewayAttachment) Properties() types.Properties {
    properties := types.NewProperties()
    for _, tagValue := range v.vgwTags {
        properties.SetTagWithPrefix("vgw", tagValue.Key, tagValue.Value)
    }
    for _, tagValue := range v.vpcTags {
        properties.SetTagWithPrefix("vpc", tagValue.Key, tagValue.Value)
    }
    return properties
}

func (v *EC2VPNGatewayAttachment) String() string {
    return fmt.Sprintf("%s -> %s", v.vpnID, v.vpcID)
}